Pyrophyllite is a layered aluminum-containing silicate mineral, its physical and chemical properties: 1) Mohs hardness of pyrophyllite is 1-2, with good machining performance, easy to break, easy to grind. The hardness increases with increasing SiO2 content. 2) Pyrophyllite powder are generally white, and the whiteness is generally 80, up to 93. The whiteness of pyrophyllite after calcination can reach 96. 3) High temperature stability, pyrophyllite refractoriness ≥1710 ℃. As the content of aluminum oxide increases, the refractoriness increases; as the ignition loss increases, the refractoriness increases; as the Fe content increases, the refractoriness decreases. 4) Good chemical stability of pyrophyllite, does not react with strong acids and bases. In addition to the above characteristics, pyrophyllite also has excellent characteristics such as good lubricity, low thermal expansion, and low electrical and thermal conductivity.
The limestone is fed into the bucket elevator and subsequently transported to the raw material warehouse for grinding.
After grinding, the finished products are gathered by powder concentrator, and then conveyed to a screw conveyor.
The finished products are transported to the storage warehouse, while the excess gas is filtered by the dust collector.
The whole system is equipped with three pulse dust collectors to guarantee that the whole system is free of dust leakage.
The system is outfitted with an intelligent PLC control cabinet and an upper computer.
The system is equipped with an intelligent PLC control cabinet and an upper computer.
In the glass fiber raw material and the formula for making glass fiber, the content of pyrophyllite accounts for more than 50%, which is the largest amount of raw material in the production of glass fiber.
The burning loss of ceramic raw materials and pyrophyllite is smaller than that of ceramic clay and has higher aluminum content. Adding it to the ceramic body can improve the performance of the sintered body. It is a very good ceramic raw material and can be widely used in building ceramics and sanitary ceramics. And daily fine pottery.
As a pressure-transmitting sealing medium, pyrophyllite has the characteristics of good sealing performance, small volume shrinkage under high pressure, low thermal conductivity, and excellent rheology. Currently, it is generally used as a raw and auxiliary material when synthesizing superhard materials such as diamond or cubic boron nitride. Material-pressure transmission medium (commonly known as pyrophyllite powder briquetting), and it is widely used in high-pressure synthesis of super-hard materials.
As filler, pyrophyllite powder can be filled with rubber, plastic, etc. to achieve enhanced modification. The pyrophyllite used in the rubber industry requires Fe2O3 <1% to 1.5%, loss on ignition <8%, moisture <0.5%, and pyrophyllite content> 80% to 85%.
As a refractory, pyrophyllite has a refractoriness of over 1700 ℃. Pyrophyllite can be made into wax stone bricks for iron and steel production such as steel drum lining, steel pouring system, etc., and can also be used as a permanent layer of torpedo tankers with excellent high temperature resistance and thermal insulation performance.
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